Patents
Patents for H04B 3 - Line transmission systems (31,523)
02/2005
02/16/2005EP1506624A2 Apparatus and method of echo-cancellation
02/16/2005CN1582562A Method and system for classifying network connections
02/16/2005CN1581728A User accessing device with concurrent mobile and fixed terminal proterty in wireless communication system
02/16/2005CN1581719A High-speed power line communication local side device
02/16/2005CN1581718A Remote current sensing and communication over single pair of power feed wires
02/16/2005CN1581717A Apparatus for transmitting telephone signal in coaxial cable
02/16/2005CN1581696A Receiving device and transmission device using same
02/16/2005CN1190019C Reception method and receiver array for a duplex transmission system
02/15/2005US6856799 Communications system, communication method and corresponding devices
02/15/2005US6856684 Device and method for echo compensation in a two-wire full duplex channel transmission method
02/15/2005US6856647 Methods and systems for neutral-to-ground communication
02/15/2005US6856163 Power supply decoupling for parallel terminated transmission line
02/15/2005CA2354732C A remote feeder reactance coil
02/10/2005WO2005013476A2 Radio frequency communication between devices via a power plane on a circuit board
02/10/2005WO2004109948A3 Near-end, far-end and echo cancellers in a multi-channel transceiver system
02/10/2005WO2004079941A3 Digital method and device for reducing crosstalk
02/10/2005WO2004065559A3 Power conditioners and pseudo isolation for a two-wire processing network
02/10/2005US20050031097 Gateway with voice
02/10/2005US20050030912 Use of hybrid (HW/DSP/MCU/SW) architectures for powerline OFDM communication field
02/10/2005US20050030910 Full duplex wideband communications system for a local coaxial network
02/10/2005US20050030909 Amplifier for downstream and upstream signals
02/10/2005US20050030884 Method and system for crosstalk cancellation
02/10/2005US20050030522 Characterization of active and passive optical properties of an optical device
02/10/2005US20050030165 Multiplex bus interface system and method for transmitting and receiving power and data
02/10/2005US20050029632 Circuit and method for suppression of electromagnetic coupling and switching noise in multilayer printed circuit boards
02/10/2005US20050029007 Alien crosstalk suppression with enhanced patch cord
02/10/2005DE10332756A1 Signal adapter for application in using a mains electrical power line as a means of data transmission.
02/10/2005DE10331744A1 Induktive Ankoppelschaltung und Verfahren zur Nachrichtenübertragung in elektrischen Energieverteilnetzen Inductive coupling circuit and method for communication in electrical power distribution networks
02/09/2005EP1505749A1 Characterization of active and passive optical properties of an optical device
02/09/2005EP1505723A1 Hybrid distortion compensation method and hybrid distortion compensation device
02/09/2005EP1504543A2 Data access arrangement using a high frequency transformer for electrical isolation
02/09/2005EP1504542A1 Virtual speaker demonstration system and virtual noise simulation
02/09/2005EP1221228B1 Local area network of serial intelligent cells
02/09/2005CN2678257Y Photoelectric compound network unit
02/09/2005CN1579078A ZF-based adaptive asynchronous receiver
02/09/2005CN1578287A 波形均衡器 Waveform equalizer
02/09/2005CN1578237A Long-distance high speed transmitting data method for Ethernet
02/09/2005CN1578183A System and method for improving waveform distortion during signal transmission process
02/09/2005CN1189010C High frequency network communication equipments for transmitting over various lines
02/09/2005CN1189008C Apparatus and method for detecting telephone calling and modulator-demodulator containing the same apparatus
02/09/2005CN1188959C Davice and method for estimating time delay of echo path
02/09/2005CN1188945C Calibrating apparatus and method for amplifier
02/08/2005US6854059 Method and apparatus for medium access control in powerline communication network systems
02/08/2005US6853685 Circuit arrangement for the electrically isolated transfer of digital signals
02/08/2005US6853679 Interconnect circuit for data transmission in an integrated circuit
02/08/2005US6853626 Method and apparatus for echo cancellation in an asymmetric communication system
02/08/2005US6853616 Orthogonal frequency division multiplexing receiver where FFT Window position recovery interlocks with sampling clock adjustment and method thereof
02/03/2005WO2005011142A2 Data communication over power lines
02/03/2005WO2005011139A1 Electronic circuit to reduce noise in digital subscriber loop and communications over unshielded twisted pair metallic conductors
02/03/2005WO2005011133A2 Power line home network
02/03/2005WO2005010729A2 Powerline endpoint for data communication
02/03/2005WO2004079470A3 Unit for controlling the operation of devices arranged in series in a supply line
02/03/2005WO2004054117A3 A power line communication system and method of operating the same
02/03/2005US20050027456 Method and arrangement for signal loop test
02/03/2005US20050026587 Radio frequency communication between devices via a power plane on a circuit board
02/03/2005US20050025309 Digital subscriber line communicating system
02/03/2005US20050025275 Apparatus of phase-frequency detector
02/03/2005US20050025266 Adaptive electronic transmission signal cancellation apparatus for full duplex communication
02/03/2005US20050025229 Method and apparatus for channel equalization
02/03/2005US20050024999 Method and related optical disk accessing apparatus for calibrating optical disk tilt servo system according to non-constant relation between locations and tilt angles of optical disk
02/03/2005US20050024083 Electronic device with serial ATA interface and signal amplitude automatic adjustment method
02/03/2005US20050024066 Remote current sensing and communication over single pair of power feed wires
02/03/2005DE10119039B4 Vorrichtung zur Übertragung von Daten über das Stromversorgungsnetz Apparatus for transmitting data over the power supply network
02/02/2005EP1503556A2 ADSL modem apparatus and communication method thereof
02/02/2005EP1503517A2 Method and apparatus for increasing receiver immunity to interference
02/02/2005EP1503505A2 Noise determination and DSL Modem with noise determination
02/02/2005EP1502401A1 High bandwidth data transport system
02/02/2005EP1502375A2 Interference-free lms-based adaptive asynchronous receiver
02/02/2005EP1502268A2 Construction of medium voltage power line data couplers
02/02/2005CN1575406A Two wire output/power mechanism for remote devices
02/02/2005CN1574801A Two-wire data communication
02/02/2005CN1574767A On-line method for testing echoing characteristic of communication system and testing system thereof
02/02/2005CN1574672A Data transfer apparatus for low voltage differential signaling
02/02/2005CN1574671A Cable modem module and transmitter-receiver
02/02/2005CN1187907C Deep sea long distance digital communication system based on CAN bus
02/02/2005CN1187828C Semiconductor device capable of preventing generating multiple reflections, and driving and setting method
02/01/2005US6850783 Methods and apparatus for mitigating the effects of microphone overload in echo cancelation systems
02/01/2005US6850577 Voice and data exchange over a packet based network with timing recovery
02/01/2005US6850562 Digital equalizing method and radio communication receiver implementing said method
02/01/2005CA2201564C Optical repeaters for single- and multi-wavelength operation with dispersion equalization
01/2005
01/27/2005WO2005008913A1 Inductive coupling circuit and telecommunication method by sheathed cables of an electrical current distribution network
01/27/2005WO2005008912A1 Alien crosstalk suppression with enhanced patch cord
01/27/2005WO2005008911A1 Method and device for reducing common mode signal in power line communication system
01/27/2005WO2005008910A1 Speech communication apparatus
01/27/2005WO2005008903A2 A power line communication system and method of operating the same
01/27/2005WO2005008902A2 A power line communication system and method of operating the same
01/27/2005WO2005008559A2 Rf id tag
01/27/2005WO2005008210A2 System and method for performing security access control based on modified biometric data
01/27/2005WO2004100392B1 Method for transmitting data by means of a carrier current
01/27/2005US20050022248 Optimization of a full duplex wideband communications system
01/27/2005US20050020233 Repeaters sharing a common medium for communications
01/27/2005US20050020232 Data communication over power lines
01/27/2005US20050018857 Wired, wireless, infrared, and powerline audio entertainment systems
01/27/2005US20050018801 Wobble clock generator and driving method thereof
01/27/2005US20050018800 Apparatus of adjusting wobble clock
01/27/2005US20050018798 Voice and data exchange over a packet based network with timing recovery
01/27/2005US20050018796 Method of combining an analysis filter bank following a synthesis filter bank and structure therefor
01/27/2005US20050018781 Digital subscriber line communicating system
01/27/2005US20050018777 Method and apparatus for reducing noise in an unbalanced channel using common mode component
01/27/2005US20050018764 Method of determining adip information through counting identical bits and different bits